Heating-drum for fruit-driers



(No Model.) 7

N. C. & J. I. CLEMENT. HEATING DRUM FOB. FRUIT DRIERS.

Patented July 30, 1889.

Nv PETERS. Phnlv-Liihngmphcn Washington, D. C.

UNITED STATES PATENT -OFFICE.

NATHANIEL C. CLEMENT AND JAMES I. CLEMENT, OF VEST PLAINS, MISSOURI.

HEATING-DRUM FOR FRUIT-DRIERS.

SPECIFICATION forming part of Letters Patent No. 408,083, dated July 30, 1889.

Application filed June 12, 1888. Serial No. 276,855- (No model.)

To all whom it may concern:

Be it known that we, NATHANIEL C. CLEM- ENT and JAMES I. CLEMENT, citizens of the United States, residing at Vest Plains, in the county of Howell and State of Missouri, have invented new and useful Improvements in Heating-Drums for FruitDriers, of which the following is a specification.

Our invention relates to improvements in heating-drums for fruit-driers; and it consists in certain novel features hereinafter described and claimed.

In the accompanying drawings, which fully illustrate our invention, Figure 1 is a side view of our improved device, showing it in operative position. Fig. 2 is a vertical section of the heating-drum, the evaporating-pan being omitted.

Referring to the drawings by letter, A designates an ordinary heating-stove, and B designates our improved heating-drum. The

said heating-drum comprises a cylinder C, having closed upper and lower ends and provided at one side, near its upper end, with the inlet or feed pipe D, which communicates with the smoke-pipe of the stove. The cylinder is further provided near its upper and lower ends and diametrically opposite to the inlet-pipe with the outlet-pipes E F, communicating with the escape-pipe G, as shown;

II II designate air-flues extending longitndinally through the cylinder and having their opposite open ends flush with the upper and lower ends of the cylinder. A cap I is secured to the lower end of the cylinder, thereby forming a chamber .I below the cylinder, in which the fresh air collects, thereby insuring a constant supply of air to and circulation of the same through said flues. From the center of this cap depends a short tube K, through which the fresh air is supplied to the fines. Turning valves or dampers L M are pivotally mounted in the pipe E and tube K, respectively, and the valve-rods are provided with crank-handles N on one end. Links 0 are hung on the pipe E and tube K, and their lower ends engage the free ends of said crank-arms when the dampers are closed, as will be readily understood. hen it is desired to open the dampers, the links are disengaged from the crank-arms,when the weight of said arms will cause them to drop, thereby opening the dampers.

In practice the evaporating-pans are placed on the upper end of the drum, and the air rising from the floor passes through the tube K and the cap I, and, rising through the fines H, is heated in its passage and is applied directly to the evaporating-pans. IVhen it is desired to apply the greatest amount of heat to the evaporating-pan, the damper M is opened and the damper L is closed. The fresh air will then have free access to the fines H, and the heated air and products of combustion from the stove will pass downward through the cylinder to the escape-pipe F and out through the same and the pipe G. The said heated air and products of combustion will thus be brought in contact with the entire length of the fines, effectually heating the same and the air passing therethrough. \Vhen it is desired to heat the pans more slowly, the damper L is opened, thus allowing the products to pass directly through the drum. \Vhen it is desired to allow the pans to cool off, the damper M is closed, thus cutting off the supply of air to the flues.

From the foregoing description itis thought the advantages and operation of our device will be readily understood.

Having thus described our invention,what We claim, and desire to secure by Letters Patent, is-

l. The improved heating-drum consisting,

essentially, of the cylinder having the vertical air-tubes, the inlet-pipe D at the upper end of the cylinder, the escape-pipes E and F at the upper and lower ends of the cylinder, respectively, the pipe E being provided with a damper, and the pipe G, connecting and communicating with the pipes E F, as specified. 2. The combination of the cylinder having the air-lines, the cap secured thereto, the tube depending from the cap, the damper in said tube having a damper-rod provided with a crank-arm on one end, and the link secured to the tube and engaging the said crank-arm, as set forth.

In testimony that we claim the foregoing as our own we have hereto affixed our signatures in presence of two witnesses.

NATHANIEL C. CLEMENT. JAMES I. CLEMENT.

\Vitnesses:

R. M. VAUGHAN, ELMER STONE. 

